Updating protobuf version in the bigtable-hbase-integration-tests This change fixes the broken hbase mini cluster test.
Updating protobuf version in the bigtable-hbase-integration-tests
This change fixes the broken hbase mini cluster test.

kevinsi4508/cloud-bigtable-client,waprin/cloud-bigtable-client,rameshdharan/cloud-bigtable-client,googleapis/java-bigtable-hbase,kevinsi4508/cloud-bigtable-client,derjust/cloud-bigtable-client,googleapis/java-bigtable-hbase,sduskis/cloud-bigtable-client,agibsonccc/cloud-bigtable-client,googleapis/java-bigtable-hbase,sduskis/cloud-bigtable-client,rameshdharan/cloud-bigtable-client,ceocoder/cloud-bigtable-client